类似于绘图的java源码（根据java代码画类图）
本文目录一览：
- 1、求java图形界面树类编程源码举例。类似windows资源管理器那样的。如附图，2层2项即可。
- 2、求java版画图程序的源代码
- 3、怎么用java实现逐次的绘图呢？ 就是一次绘一张，然后显示出来，紧接着把这次画的清空，再画下一次的。
- 4、求java绘图程序源代码（加注释），在如下图的基础上，在图案种类上添加圆角矩形，求代码
- 5、急需!!基于java的图形编辑器源代码
- 6、java图形界面设计实验，求源代码！
求java图形界面树类编程源码举例。类似windows资源管理器那样的。如附图，2层2项即可。
public void init(){
Container contentPane=null;
DefaultMutableTreeNode treeNode=new DefaultMutableTreeNode("我的电脑");
DefaultMutableTreeNode treeNode1=new DefaultMutableTreeNode("网络");
DefaultMutableTreeNode treeNode2=new DefaultMutableTreeNode("硬盘");
DefaultMutableTreeNode treeNode1_1=new DefaultMutableTreeNode("无限");
DefaultMutableTreeNode treeNode1_2=new DefaultMutableTreeNode("有限");
DefaultMutableTreeNode treeNode2_1=new DefaultMutableTreeNode("A");
DefaultMutableTreeNode treeNode2_2=new DefaultMutableTreeNode("B");
treeNode.add(treeNode1);
treeNode.add(treeNode2);
treeNode1.add(treeNode1_1);
treeNode1.add(treeNode1_2);
treeNode2.add(treeNode2_1);
treeNode2.add(treeNode2_2);
JTree tree=new JTree(treeNode);
contentPane=getContentPane();
JPanel jp=new JPanel();
jp.add(tree);
contentPane.add(jp);
this.setSize(300,250);
this.setLocation(400, 300);
this.setVisible(true);
}
求java版画图程序的源代码
找到了，很久以前写的一个简单画图，呵呵～当时要求用AWT写，很难受。
package net.miqiang.gui;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
/**
* 简单画图板程序
* 好久没用 AWT 了，写起来真别扭，如果用 swing 会很舒服，有空再改写吧。
*
* @author 米强
*
*/
public class TestMain extends Frame {
// 画板
private Palette palette = null;
// 显示当前颜色的面板
private Panel nonceColor = null;
// 画笔粗细
private Label drawWidth = null;
// 画笔端点的装饰
private Label drawCap = null;
// 选取颜色按钮的监听事件类
private ButtonColorAction buttonColorAction = null;
// 鼠标进入按钮后光标样式的监听事件类
private ButtonCursor buttonCursor = null;
// 画笔样式的监听事件
private ButtonStrokeAction buttonStrokeAction = null;
/**
* 构造方法
*
*/
public TestMain() {
// 设置标题栏文字
super("简易画图板");
// 构造一个画图板
palette = new Palette();
Panel pane = new Panel(new GridLayout(2, 1));
// 画笔颜色选择器
Panel paneColor = new Panel(new GridLayout(1, 13));
// 12 个颜色选择按钮
Button [] buttonColor = new Button[12];
Color [] color = {Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green, Color.magenta, Color.orange, Color.pink, Color.red, Color.white, Color.yellow};
// 显示当前颜色的面板
nonceColor = new Panel();
nonceColor.setBackground(Color.black);
paneColor.add(nonceColor);
buttonColorAction = new ButtonColorAction();
buttonCursor = new ButtonCursor();
for(int i = 0; i buttonColor.length; i++){
buttonColor[i] = new Button();
buttonColor[i].setBackground(color[i]);
buttonColor[i].addActionListener(buttonColorAction);
buttonColor[i].addMouseListener(buttonCursor);
paneColor.add(buttonColor[i]);
}
pane.add(paneColor);
// 画笔颜色选择器
Panel paneStroke = new Panel(new GridLayout(1, 13));
// 控制画笔样式
buttonStrokeAction = new ButtonStrokeAction();
Button [] buttonStroke = new Button[11];
buttonStroke[0] = new Button("1");
buttonStroke[1] = new Button("3");
buttonStroke[2] = new Button("5");
buttonStroke[3] = new Button("7");
buttonStroke[4] = new Button("9");
buttonStroke[5] = new Button("11");
buttonStroke[6] = new Button("13");
buttonStroke[7] = new Button("15");
buttonStroke[8] = new Button("17");
buttonStroke[9] = new Button("■");
buttonStroke[10] = new Button("●");
drawWidth = new Label("3", Label.CENTER);
drawCap = new Label("●", Label.CENTER);
drawWidth.setBackground(Color.lightGray);
drawCap.setBackground(Color.lightGray);
paneStroke.add(drawWidth);
for(int i = 0; i buttonStroke.length; i++){
paneStroke.add(buttonStroke[i]);
buttonStroke[i].addMouseListener(buttonCursor);
buttonStroke[i].addActionListener(buttonStrokeAction);
if(i = 8){
buttonStroke[i].setName("width");
}else{
buttonStroke[i].setName("cap");
}
if(i == 8){
paneStroke.add(drawCap);
}
}
pane.add(paneStroke);
// 将画笔颜色选择器添加到窗体中
this.add(pane, BorderLayout.NORTH);
// 将画图板添加到窗体中
this.add(palette);
// 添加窗口监听，点击关闭按钮时退出程序
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// 设置窗体 ICON 图标
this.setIconImage(Toolkit.getDefaultToolkit().createImage("images/palette.png"));
// 设置窗口的大小
this.setSize(new Dimension(400, 430));
// 设置窗口位置，处于屏幕正中央
this.setLocationRelativeTo(null);
// 显示窗口
this.setVisible(true);
}
/**
* 程序入口
*
* @param args
* 字符串数组参数
*/
public static void main(String[] args) {
new TestMain();
}
/**
* 选取颜色按钮的监听事件类
* @author 米强
*
*/
class ButtonColorAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
Color color_temp = ((Button)e.getSource()).getBackground();
nonceColor.setBackground(color_temp);
palette.setColor(color_temp);
}
}
/**
* 鼠标进入按钮变换光标样式监听事件类
* @author 米强
*
*/
class ButtonCursor extends MouseAdapter {
public void mouseEntered(MouseEvent e) {
((Button)e.getSource()).setCursor(new Cursor(Cursor.HAND_CURSOR));
}
public void mouseExited(MouseEvent e) {
((Button)e.getSource()).setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
}
/**
* 设置画笔的监听事件类
* @author 米强
*
*/
class ButtonStrokeAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
Button button_temp = (Button) e.getSource();
String name = button_temp.getName();
if(name.equalsIgnoreCase("width")){
drawWidth.setText(button_temp.getLabel());
palette.setStroke(Float.parseFloat(button_temp.getLabel()));
}else if(name.equalsIgnoreCase("cap")){
drawCap.setText(button_temp.getLabel());
if(button_temp.getLabel().equals("■")){
palette.setStroke(BasicStroke.CAP_SQUARE);
}else if(button_temp.getLabel().equals("●")){
palette.setStroke(BasicStroke.CAP_ROUND);
}
}
}
}
}
/**
* 画板类
*
* @author 米强
*
*/
class Palette extends Panel implements MouseListener, MouseMotionListener {
// 鼠标 X 坐标的位置
private int mouseX = 0;
// 上一次 X 坐标位置
private int oldMouseX = 0;
// 鼠标 Y 坐标的位置
private int mouseY = 0;
// 上一次 Y 坐标位置
private int oldMouseY = 0;
// 画图颜色
private Color color = null;
// 画笔样式
private BasicStroke stroke = null;
// 缓存图形
private BufferedImage image = null;
/**
* 构造一个画板类
*
*/
public Palette() {
this.addMouseListener(this);
this.addMouseMotionListener(this);
// 默认黑色画笔
color = new Color(0, 0, 0);
// 设置默认画笔样式
stroke = new BasicStroke(3.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
// 建立 1280 * 1024 的 RGB 缓存图象
image = new BufferedImage(1280, 1024, BufferedImage.TYPE_INT_RGB);
// 设置颜色
image.getGraphics().setColor(Color.white);
// 画背景
image.getGraphics().fillRect(0, 0, 1280, 1024);
}
/**
* 重写 paint 绘图方法
*/
public void paint(Graphics g) {
super.paint(g);
// 转换为 Graphics2D
Graphics2D g2d = (Graphics2D) g;
// 获取缓存图形 Graphics2D
Graphics2D bg = image.createGraphics();
// 图形抗锯齿
bg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 设置绘图颜色
bg.setColor(color);
// 设置画笔样式
bg.setStroke(stroke);
// 画线，从上一个点到新的点
bg.drawLine(oldMouseX, oldMouseY, mouseX, mouseY);
// 将缓存中的图形画到画板上
g2d.drawImage(image, 0, 0, this);
}
/**
* 重写 update 方法
*/
public void update(Graphics g) {
this.paint(g);
}
/**
* @return stroke
*/
public BasicStroke getStroke() {
return stroke;
}
/**
* @param stroke 要设置的 stroke
*/
public void setStroke(BasicStroke stroke) {
this.stroke = stroke;
}
/**
* 设置画笔粗细
* @param width
*/
public void setStroke(float width) {
this.stroke = new BasicStroke(width, stroke.getEndCap(), stroke.getLineJoin());
}
/**
* 设置画笔端点的装饰
* @param cap 参考 java.awt.BasicStroke 类静态字段
*/
public void setStroke(int cap) {
this.stroke = new BasicStroke(stroke.getLineWidth(), cap, stroke.getLineJoin());
}
/**
* @return color
*/
public Color getColor() {
return color;
}
/**
* @param color 要设置的 color
*/
public void setColor(Color color) {
this.color = color;
}
public void mouseClicked(MouseEvent mouseEvent) {
}
/**
* 鼠标按下
*/
public void mousePressed(MouseEvent mouseEvent) {
this.oldMouseX = this.mouseX = mouseEvent.getX();
this.oldMouseY = this.mouseY = mouseEvent.getY();
repaint();
}
public void mouseReleased(MouseEvent mouseEvent) {
}
/**
* 鼠标进入棋盘
*/
public void mouseEntered(MouseEvent mouseEvent) {
this.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
}
/**
* 鼠标退出棋盘
*/
public void mouseExited(MouseEvent mouseEvent) {
this.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
/**
* 鼠标拖动
*/
public void mouseDragged(MouseEvent mouseEvent) {
this.oldMouseX = this.mouseX;
this.oldMouseY = this.mouseY;
this.mouseX = mouseEvent.getX();
this.mouseY = mouseEvent.getY();
repaint();
}
public void mouseMoved(MouseEvent mouseEvent) {
}
}
怎么用java实现逐次的绘图呢？ 就是一次绘一张，然后显示出来，紧接着把这次画的清空，再画下一次的。
这个就是动画播放咯。。
如果你希望自动切换，那么你可以用线程画。结束的时候睡眠1~2秒，然后清空画布开始画另外一个。
如果你希望手动切换，那么你可以用button控件的Click事件控制它的操作。
求java绘图程序源代码（加注释），在如下图的基础上，在图案种类上添加圆角矩形，求代码
直线 是 Line2D
矩形是 Rectangle2D
弧 Arc2D
椭圆 Ellipse2D
圆角矩形是 RoundRectangle2D
上面的都在 java.awt.geom包里
急需!!基于java的图形编辑器源代码
本来不该直接给人作业的，所以一些格式很乱也不打算改了。框架已经写好，自己参考着加上三角形的功能吧（总得自己做点东西吧）。
/*
* Paint.java
*
* Created on May 9, 2008, 10:10 AM
*/
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
/**
*
* @author uestcfb
*/
public class Paint extends JFrame {
ListShape list = new ArrayListShape();
private Point end;
class PaintArea extends JPanel {
ListShape list;
public PaintArea(ListShape list) {
this.list = list;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
for (Shape s : list) {
s.paint(g);
}
}
}
private ShapeType selectedShape = ShapeType.values()[0];
/** Creates new form Paint */
public Paint() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// editor-fold defaultstate="collapsed" desc="Generated Code"
private void initComponents() {
jComboBox1 = new javax.swing.JComboBox(ShapeType.values());
jPanel1 = new PaintArea(list);
jlebel1 = new javax.swing.JLabel();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
}
});
jPanel1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jPanel1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mousePressed(java.awt.event.MouseEvent evt) {
jPanel1MousePressed(evt);
}
public void mouseReleased(java.awt.event.MouseEvent evt) {
jPanel1MouseReleased(evt);
}
});
jPanel1.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
public void mouseDragged(java.awt.event.MouseEvent evt) {
jPanel1MouseDragged(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(
jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 445,
Short.MAX_VALUE));
jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 388,
Short.MAX_VALUE));
jlebel1.setText("" + jComboBox1.getSelectedItem());
jlebel1.setToolTipText(getWarningString());
jLabel1.setText("Choose shape");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(
getContentPane());
getContentPane().setLayout(layout);
layout
.setHorizontalGroup(layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
layout
.createSequentialGroup()
.addContainerGap()
.addGroup(
layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
layout
.createSequentialGroup()
.addComponent(
jPanel1,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
Short.MAX_VALUE)
.addContainerGap())
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
layout
.createSequentialGroup()
.addComponent(
jlebel1,
javax.swing.GroupLayout.PREFERRED_SIZE,
134,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(
142,
142,
142))))
.addGroup(
layout
.createSequentialGroup()
.addGap(98, 98, 98)
.addComponent(
jLabel1,
javax.swing.GroupLayout.PREFERRED_SIZE,
103,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(
jComboBox1,
javax.swing.GroupLayout.PREFERRED_SIZE,
159,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(105, Short.MAX_VALUE)));
layout
.setVerticalGroup(layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
layout
.createSequentialGroup()
.addContainerGap()
.addGroup(
layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
jComboBox1,
javax.swing.GroupLayout.PREFERRED_SIZE,
21,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(
jLabel1,
javax.swing.GroupLayout.PREFERRED_SIZE,
18,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(
jPanel1,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
Short.MAX_VALUE)
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(
jlebel1,
javax.swing.GroupLayout.PREFERRED_SIZE,
35,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap()));
pack();
}// /editor-fold
private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {
selectedShape = (ShapeType) jComboBox1.getSelectedItem();
jlebel1.setText(selectedShape.toString());
}
Shape current = null;
private void jPanel1MouseReleased(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
start = null;
end = null;
}
private void jPanel1MouseDragged(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
if (start != null) {
end = evt.getPoint();
list.remove(current);
if (selectedShape == ShapeType.RECTANGLE) {
current = new Rectangle(start, end);
} else if (selectedShape == ShapeType.CIRCLE) {
current = new Circle(start, end);
}
if (current != null) {
list.add(current);
}
System.out.println(start + "," + end);
System.out.println("----");
repaint();
}
}
private void jPanel1MousePressed(java.awt.event.MouseEvent evt) {
start = evt.getPoint();
end = evt.getPoint();
if (selectedShape == ShapeType.RECTANGLE) {
current = new Rectangle(start, end);
} else if (selectedShape == ShapeType.CIRCLE) {
current = new Circle(start, end);
}
if (current != null) {
list.add(current);
}
}
/**
* @param args
* the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Paint().setVisible(true);
}
});
}
enum ShapeType {
RECTANGLE, CIRCLE;
}
abstract class Shape {
abstract protected void paint(Graphics g);
}
class Rectangle extends Shape {
Point p1;
Point p2;
Rectangle(Point p1, Point p2) {
this.p1 = p1;
this.p2 = p2;
}
@Override
protected void paint(Graphics g) {
g.drawRect((int) p1.getX(), (int) p1.getY(), (int) (p2.getX() - p1
.getX()), (int) (p2.getY() - p1.getY()));
}
}
class Circle extends Shape {
Point p1;
Point p2;
Circle(Point p1, Point p2) {
this.p1 = p1;
this.p2 = p2;
}
@Override
protected void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
double x1 = p1.getX();
double y1 = p1.getY();
double x2 = p2.getX();
double y2 = p2.getY();
g2.drawOval((int) x1, (int) y1, (int) x2, (int) y2);
}
}
// Variables declaration - do not modify
private javax.swing.JLabel jlebel1;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
// End of variables declaration
private Point start = null;
}
java图形界面设计实验，求源代码！
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Calculator01 extends JFrame implements ActionListener {
JPanel jp1,jp2;
JTextField jt1,jt2,jt3;
JButton btn_add,btn_sub,btn_clean;
public Calculator01() {
init();
}
public void init() {
setTitle("简易计算器");
setLocationRelativeTo(null);
setSize(600, 100);
jp1 = new JPanel();
jp2 = new JPanel();
add(jp1, BorderLayout.NORTH);
add(jp2,BorderLayout.SOUTH);
jt1 = new JTextField(15);
jp1.add(jt1);
jt2 = new JTextField(15);
jp1.add(jt2);
jt3 = new JTextField(15);
jp1.add(jt3);
btn_add = new JButton("+");
btn_add.addActionListener(this);
jp2.add(btn_add);
btn_sub = new JButton("-");
btn_sub.addActionListener(this);
jp2.add(btn_sub);
btn_clean = new JButton("清除");
btn_clean.addActionListener(this);
jp2.add(btn_clean);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == btn_clean)
{
jt1.setText("");
jt2.setText("");
jt3.setText("");
}
else
{
if (jt1.getText().equals("") || jt2.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "请在前两个框输入数字");
}
else
{
double number1=Double.parseDouble(jt1.getText());
double number2=Double.parseDouble(jt2.getText());
double result=0;
if (e.getSource() == btn_add)
{
result = number1 + number2;
}
else
{
result = number1 - number2;
}
jt3.setText(""+result);
}
}
}
}
